Water-soluble unit dose article comprising a solid laundry detergent composition

Abstract

Water-soluble unit dose article containing solid laundry detergent composition and water-soluble film.

What is claimed is: 
     
       1. A water-soluble unit dose article comprising a water-soluble film and a solid laundry detergent composition, wherein the water-soluble film defines a first internal compartment and wherein the solid laundry detergent composition is comprised within the first internal compartment, and wherein the water-soluble unit dose article composition comprises at least one of the following components (a.-f.):
 a. between about 0.05% and about 2% by weight of the solid laundry detergent composition of a whitening agent selected from a hueing dye and an optical brightener; 
 b. between about 0.001% and about 1% by weight of the solid laundry detergent composition of the enzyme; 
 c. a stain removal active selected from acrylate/maleate random copolymer, a chelant or a mixture thereof, and wherein if present the acrylate/maleate random copolymer comprises between about 0.5% and about 15%, by weight of the solid laundry detergent composition and if present the chelant comprises between about 1% and about 20% by weight of the solid laundry detergent composition; 
 d. between about 0.05% and about 5% by weight of the solid laundry detergent composition of a cationically modified polysaccharide; 
 e. a capsule, wherein the capsule comprises a shell and a core wherein the core comprises a perfume and wherein the perfume is present between about 0.05% and about 10% by weight of the solid laundry detergent composition; 
 f. or a mixture thereof; 
 wherein the solid composition at about 1 wt % dilution in deionized water at about 20° C., has an equilibrium pH in the range of from about 6.5 to about 8.8. 
 
     
     
       2. The water-soluble unit dose article according to  claim 1 , wherein the solid laundry detergent composition comprises from about 0 wt % to about 10 wt % of carbonate salt wherein the carbonate salts are selected from sodium carbonate, potassium carbonate, sodium bicarbonate, sodium bicarbonate, burkeite, sesquicarbonate habit modified carbonate, crystal growth modified burkeite or a mixture thereof. 
     
     
       3. The water-soluble unit dose article according to  claim 1 , wherein the optical brightener is selected from hydrophobic brighteners, stilbene brighteners, biphenyl brighteners or a mixture thereof. 
     
     
       4. The water-soluble unit dose article according to  claim 1 , wherein the enzyme is selected from the group comprising hemicellulases, peroxidases, proteases, cellulases, xylanases, lipases, phospholipases, esterases, cutinases, pectinases, keratanases, reductases, oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanases, tannases, pentosanases, malanases, ß-glucanases, arabinosidases, hyaluronidase, chondroitinase, laccase, and amylases, or mixtures thereof. 
     
     
       5. The water-soluble unit dose article according to  claim 1 , wherein the chelant is selected from amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelating agents and mixtures thereof. 
     
     
       6. The water-soluble unit dose article according to  claim 1  wherein the acrylate/maleate random copolymer has a molecular weight of from about 50,000 Da to about 100,000 Da. 
     
     
       7. The water-soluble unit dose article according to  claim 1 , wherein the cationically modified polysaccharide is selected from cationic guar gums, cationic cellulosic polymers, and mixtures thereof. 
     
     
       8. The water-soluble unit dose article according to  claim 7 , wherein the cationically modified polysaccharide is selected from cationically modified hydroxyethyl cellulose, cationically modified hydroxypropyl cellulose, cationically and hydrophobic ally modified hydroxyethyl cellulose, cationically and hydrophobically modified hydroxypropyl cellulose, or a mixture thereof. 
     
     
       9. The water-soluble unit dose article according to  claim 1 , wherein the shell material comprises, aminoplast, polyacrylate, polyacrylamide, silicones, silica, polystyrene, polyurea, polyurethanes, resorcinol, gelatin, polyamides, or mixtures thereof. 
     
     
       10. The water-soluble unit dose article according to  claim 1  wherein the solid laundry detergent composition comprises a non-soap anionic surfactant and wherein the non-soap anionic surfactant comprises linear alkylbenzene sulphonate, alkoxylated alkyl sulphate or a mixture thereof. 
     
     
       11. The water-soluble unit dose article according to  claim 10  wherein the solid laundry detergent composition comprises between about 20% and about 75% by weight of the solid laundry detergent composition of the non-soap anionic surfactant. 
     
     
       12. The water-soluble unit dose article according to  claim 11  wherein the solid laundry detergent composition comprises between about 30% and about 70% by weight of the solid laundry detergent composition of the non-soap anionic surfactant. 
     
     
       13. The water-soluble unit dose article according to  claim 1  wherein the solid laundry detergent composition comprises between about 1% and about 10% by weight of the solid laundry detergent composition of an organic acid. 
     
     
       14. The water-soluble unit dose article according to  claim 13  and wherein the organic acid is a carboxylic acid selected from citric acid, malic acid, lactic acid, propionic acid, valeric acid, caproic acid, carbonic acid, adipic acid, gluconic acid, methylglycinediacetic acid or a mixture thereof. 
     
     
       15. The water-soluble unit dose article according to  claim 1  wherein the solid laundry detergent composition is a free flowing particulate solid, a compressed particulate solid or a mixture thereof and has a mean particle size between about 400 microns and about 1000 microns. 
     
     
       16. The water-soluble unit dose article according to  claim 1  wherein the solid laundry detergent composition has a bulk density of between about 400 and about 1000 g/l. 
     
     
       17. The water-soluble unit dose article according to  claim 1  wherein the first compartment comprises between about 1 g and about 25 g of the solid laundry composition. 
     
     
       18. The water-soluble unit dose article according to  claim 1  wherein the water-soluble film comprises polyvinyl alcohol. 
     
     
       19. The water-soluble unit dose article according to  claim 1  wherein the water-soluble unit dose article comprises at least a first compartment and a second compartment. 
     
     
       20. A method of washing comprising the steps of adding the water-soluble unit dose article according to  claim 1  to sufficient water to dilute the solid laundry detergent composition by a factor of at least about 300 fold to create a wash liquor and contacting fabrics to be washed with said wash liquor.